1. First prepare your data. The data must contains easting (x), northing(y) and Join. The Join is a unique attribute that represents how the points connect to others. Point with the same join will a line. See my data below.
2. Now create point using the data. Go to Table|Create Point. An the result is something like this.
3. Now its time to convert the points into polygon. Make sure you already installed Encom Discover. I use current Discover version (version 11) but you can do this using any previous
Discover version. Go to Discover|Table utilities|Build Objects from Tables.
4. On the Build Objects from Table window, specify the file format you are using. In this example I use Column delimited x,y Polylines (from table), and make sure you check the Convert closed polylines to region option. On the next window, specify the table you want to convert, east and north field and also the object delimiter (join).
And here is the final conversion result.
Before conversion
After Conversion.